Game machine

ABSTRACT

A game machine includes a game board provided with a game field on which playing balls cascade downward; a bonus game determination part configured to determine that bonus game providing a game value when a predetermined condition is met, is acquired; a ball receiving hole detection part configured to detect a playing ball entering a ball receiving hole provided in the playfield; and a lottery part configured to hold a lottery to determine whether or not a specific result is acquired when the ball receiving hole detection part detects the playing ball entering. The bonus game determination part does not determine that the bonus game is acquired even when the ball receiving hole detection part detects the playing ball entering, but when the specific result is acquired as a result of the lottery held by the lottery part, determines that the player acquires the bonus game.

BACKGROUND

1. Field of the Invention

The present invention relates to a game machine.

2. Description of the Related Art

Conventionally, a slot machine using coins and medals disclosed in, forexample, Japanese Patent Application Laid-Open Publication No.2008-62046, has been popular in amusement places such as a game arcadeand a casino. With such game machine, a player first inserts apredetermined number of coins in the game machine to determine the wagerfor a game and then starts a game. Upon starting the game, reels(including images presenting reels in a video slot machine) startrotating, and, when the reels stop, coins may be paid out according to aspecific display condition (for example, the same specific symbols arestopped and displayed). To be more specific, upon starting a game, alottery is held and the player's win or loss is determined. Then, if theresult of the lottery is loss, any coin is not paid out, and, on theother hand, if the result of the lottery is win, a predetermined number(e.g. 100) of coins are paid out.

However, the above-described slot machine has a problem that the playergets bored due to a monotonous game flow, where a lottery is held at thetime of start of a game to make a flow of the game, and this flow isrepeated.

SUMMARY

Therefore, in view of the above-described problem, it is an advantage ofan aspect of the present invention to provide a game machine that canprevent players from getting bored due to the monotonous flow of a game.

According to a first aspect of the present invention, a game machineincludes: game board provided with a game field on which playing ballscascade downward; a bonus game determination part configured todetermine that a bonus game is acquired, the bonus game providing a gamevalue when a predetermined condition is met; a ball receiving holedetection part configured to detect a playing ball entering a ballreceiving hole provided in the playfield; and a lottery part configuredto hold a lottery to determine whether or not a specific result isacquired when the ball receiving hole detection part detects the playingball entering. The bonus game determination part does not determine thatthe bonus game is acquired even when the ball receiving hole detectionpart detects the playing ball entering, and, on the other hand, when thespecific result is acquired as a result of the lottery held by thelottery part, determines that the bonus game is acquired.

According to a second aspect of the present invention, the game machinefurther includes a game value providing part configured to provide apredetermined game value when the bonus game determination partdetermines that the bonus game is acquired.

According to a third aspect of the present invention, the game valueproviding part provides a game medium, as the game value, that can beconverted into a predetermined number of playing balls.

According to a fourth aspect of the present invention, the game machinefurther includes a storage part configured to store predeterminedrecording information. The game value providing part provides therecording information stored by the storage part, as the game value.

According to a fifth aspect of the present invention, the recordinginformation provided as the game value is numeric information that canbe converted into a predetermined number of playing balls.

According to a sixth aspect of the present invention, the game machinefurther includes: a launching operation detection part configured todetect a launching operation to launch the playing ball; an insertedmedium detection part configured to detect whether or not apredetermined inserted medium is received; a launch permit partconfigured to, when the inserted medium detection part detects thepredetermined inserted medium being received, permit a predeterminednumber of playing balls to be launched according to the inserted mediumuntil the predetermined condition is met; and a launching partconfigured to, on condition that the launch permit part permits thepredetermined number of playing balls to be launched, launch the playingballs toward the playfield when the launching operation detection partdetects the launching operation.

According to a seventh aspect of the present invention, the insertedmedium differs from the game value.

According to an eighth aspect of the present invention, the bonus gamedetermined by the bonus game determination part includes a plurality ofkinds of the bonus game. The lottery part holds a lottery where a resultof the lottery is obtained from a plurality of results which include aresult associated with one of the plurality of kinds of the bonus game.

Here, although “a predetermined inserted medium” substantially refers toa token such as a medal and a coin used in a game machine and metal orpaper money, money information and point information stored on aninformation recoding medium (e.g. an IC card and an IC coin) arepossible.

According to the present invention, it is possible to provide a gamemachine in which a player cannot acquire a bonus game even when aplaying ball enters in a ball receiving hole, but can acquire a bonusgame when winning a lottery. That is, the ball receiving hole has only afunction as a trigger to start a lottery.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a front view showing a game machine;

FIG. 2 is a perspective view showing the game machine;

FIG. 3 is a perspective view showing a game machine in a state in whicha glass frame is open;

FIG. 4 is a perspective view showing the front of the glass frame;

FIG. 5 is a front view showing a game board;

FIG. 6 is a back view showing the game board;

FIG. 7 is a partially enlarged view showing the back surface of the gameboard;

FIG. 8 is a block diagram showing the configuration of the game machine;

FIG. 9 shows a bonus game determination table;

FIG. 10 shows a symbol determination table;

FIG. 11 shows a performance symbol determination table;

FIG. 12 shows main processing in a main control circuit board;

FIG. 13 shows timer interrupt processing in the main control circuitboard;

FIG. 14 shows input control processing in the main control circuitboard;

FIG. 15 shows input processing of a start-up hole detection switch inthe main control circuit board;

FIG. 16 shows input processing of a bonus game gate detection switch inthe main control circuit board;

FIG. 17 shows play start control processing in the main control circuitboard;

FIG. 18 shows play end control processing in the main control circuitboard;

FIG. 19 shows special electrically movable device control processing inthe main control circuit board;

FIG. 20 shows special symbol memory determination processing in the maincontrol circuit board;

FIG. 21 shows an example of the content of performance in a creditcontrol circuit board;

FIG. 22 shows an example of the content of performance in the creditcontrol circuit board; and

FIG. 23 shows a client-server type of configuration.

DETAILED DESCRIPTION

Now, an embodiment of the present invention will be described in detailwith reference to the drawings.

(The Configuration of a Game Machine)

First, the configuration of the whole game machine will be described indetail with reference to FIG. 1 and FIG. 2. FIG. 1 is a front viewshowing a game machine according to the present embodiment, and FIG. 2is a perspective view showing the game machine.

A game machine 100 has a game board 2 provided with a playfield 6 inwhich playing balls 500 cascade downward. A glass frame 110 is providedon the front of the playfield 6 in the game board 2. An operation handle3 for launching playing balls toward the playfield 6, is rotatablyprovided on the glass frame 110. An outer frame 120 is provided on theback surface of the glass frame 110, and the glass frame 110 and theouter frame 120 are supported by a support 130.

A tray unit 4 is formed on the glass frame 110. The tray unit 4 isprovided with a paper money insert slit 21 to insert a predeterminedamount of paper money (e.g. 1000 yen) as an inserted medium, a rateswitching button 24 for changing the rate for a game (i.e.redenomination function), the settlement button 25 for settling theinserted money (or obtained credit) at the time of the end (stop) of thegame, and a performance button 26 that can be operated in variousperformance conditions in progress of the game. In addition, the glassframe 110 is provided with a ticket payout slit 22 to pay out a ticketat the time of checkout, a card receiving slit 23 that can receive andeject a so-called house card such as a membership card and a guest card,which can be used in only the amusement place, a submonitor 30 and aplurality of decorative members 35 each shaped as a star.

When a predetermined amount of paper money (e.g. 1000 yen) is insertedin the paper money insert slit 21, launching operation is enabled tolaunch at least the predetermined number (for example, up to 1000) ofplaying balls in the game machine 100. In addition, the amount of papermoney inserted is displayed on the submonitor 30 as credit. For example,when 1000 yen is inserted, “1000” is displayed as the credit of theplayer. Then, the credit decrements as “999, 998, . . . 700” every timea playing ball is launched. In addition, when the player wins a lotteryfor a bonus game started at the time a playing ball enters the start-uphole 9, a predetermined value of credit is provided and the credit valuedisplayed on the submonitor 30 are added.

In other words, with the present embodiment, when the player wins alottery (for a bonus game), playing balls are not paid out as prizeballs (that is, the playing balls as a prize given to the player havingwon a lottery), but a game value corresponding to these prize balls isprovided to the player as credit. As a result of this, the credit isaccumulated, and therefore the number of playing balls allowed to belaunched increases.

The submonitor 30 has a heart-like shape as shown in FIG. 1 and FIG. 2,and includes a liquid crystal display part 30 a at the center. Then,this liquid crystal display part 30 a serves as a data display thatdisplays information on the above-described credit. The liquid crystaldisplay part 30 a also serves as a performance display part on whichperformance associated with a bonus game or a jackpot lottery isdisplayed or carried out.

A thicket paid out from the ticket payout slit 22 is a sheet-like ticketon which information on credit is recorded. The information includes anamount of money inserted and the value obtained by playing games, whichthe player holds until the time of checkout. Anti-counterfeittechnology, including an identification number and a barcode, is appliedto this ticket, and therefore it is possible to distinguish the ticketfrom a forged ticket. Here, a ticket is paid out by driving a ticketpayout motor 202 a provided in the game machine 100. This ticket payoutmotor 202 a at least has two rollers (not shown) that sandwich a ticket.Then, each of these two rollers rotates to the ticket payout slit 22side every time the ticket payout motor 202 a rotates in a forwarddirection for one second, and one thicket is ejected from between thetwo rollers to the ticket payout slit 22.

Here, another configuration is possible where money information andcredit information can be read and written by means of a house cardinserted into the card receiving slit 23.

Next, each part of the game machine 100 will be described in detail withreference to FIG. 3 to FIG. 7.

FIG. 3 is a perspective view showing the game machine 100 where theglass frame 110 is open. FIG. 4 is a perspective view showing the glassframe 110. FIG. 5 is a front view showing the game board 2, FIG. 6 is aback view (rear view) showing the game board 2, and FIG. 7 is apartially enlarged view showing the back surface of the game board 2.

The glass frame 110 supports a glass plate 112 that is located in frontof a player and faces the game board 2 to transparently cover theplayfield 6. Here, the glass plate 112 is detachably fixed to the glassframe 110.

In addition, the glass frame 110 is pivotably coupled to the outer frame120 about a hinge mechanism part 111 at its one end in the horizontaldirection (for example, the left side of the game machine 100), and theother end in the horizontal direction (the right side of the gamemachine 100) can open from the outer frame 120. The glass frame 100 withthe glass plate 112 covers the game board 2 and pivotably coupled to theouter frame 120 about the hinge mechanism part 111 to swing as a door,so that it is possible to expose the interior portion of the outer frame120 including the game board 2. A lock mechanism for fixing the otherend of the glass frame 110 to the outer frame 120 is provided on theother end of the glass frame 110. The fixing with this lock mechanismcan be released by a dedicated key. Moreover, the grass frame 110 has adoor opening switch 33 (see FIG. 8) that detects whether or not theglass frame 110 is open.

In addition, the game machine 100 is provided with a tray 40 toaccumulate a plurality of playing balls 500 and guide playing balls to ahammer 4 b (see FIG. 3) for hitting playing balls. This tray 40 has adownslope toward the hammer 4 b to convey playing balls to a launchingrail 42 via a ball passing opening 41 provided on the back surface ofthe glass frame 110. This launching rail 42 also has a downslope towardthe hammer 4 b, and is provided with a stopper 43 for stopping playingballs in an upper part of the end of the downslope. Therefore, eachplaying ball 500 having passed through the ball passing opening 41 staysat the end of the launching rail 42 (see FIG. 3). In addition, alaunched ball detection switch 42 s is provided in launching rail 42 atthe position through which a playing ball hit by the hammer 4 b passes,and, when the launched ball detection switch 42 s detects a playingball, the detected playing ball is counted as a launched ball.

Then, when the player rotates the operation handle 3, a launching volumeadjusting part 3 a including a variable resistor directly connected tothe operation handle 3 also rotates. Here, the hammer 4 b is directlyconnected to the launching solenoid 4 c including a rotary solenoid, androtates by rotating the launching solenoid 4 c. In a launching controlcircuit board 106, in order to launch a playing ball toward theplayfield 6, the launching solenoid 4 c is excited, and the playing ball500 staying in the end of the launching rail 42 is hit by the hammer 4 bat a launching strength according to the launching volume adjusting part3 a. Here, with the present embodiment, the launching volume adjustingpart 3 a serves as a launching operation detecting part, and thelaunching solenoid 4 a directly connected to the hammer 4 b and thelaunching control circuit board 106 serve as a launching part and alaunching device, respectively.

In this way, a playing ball launched from launched rail 42 rises betweena rail 5 a and a rail 5 b shown in FIG. 5, goes over a ball returnpreventing part 5 c, reaches the playing field 6, and then falls in theplaying field 6. At this time, there are a plurality of pins andpinwheels in the direction the playing ball falls in the playfield 6, sothat it is not possible to predict how the playing ball travels.

In addition, the start-up hole 9 that playing balls can enter isprovided at a lower position in the playfield 6. A start-up holedetection switch 9 s that detects a playing ball entering, is providedin the start-up hole 9, and, when this start-up hole detection switch 9s detects a playing ball entering, “a lottery for a bonus game”described later is held.

In addition, a tulip-like electrically movable start-up hole 10(hereinafter “electrically movable start-up hole 10”) is provided justbelow the start-up hole 9. The electrically movable start-up hole 10 hasa pair of movable parts 10 b, and is controlled to switch between afirst state in which the pair of movable parts 10 b is closed and asecond state in which the pair of movable parts 10 b is open. Here, whenthe electrically movable start-up hole 10 is controlled in the firststate, it is not possible or it is difficult to receive a playing ballbecause the start-up hole 9 located just above the electrically movablestart-up hole 10 lies in the way as an obstacle. On the other hand, whenthe electrically movable start-up hole 10 is controlled in the secondstate, the pair of movable parts 10 b serves as a tray, and therefore aplaying ball can easily enter the electrically movable start-up hole 10.In other words, when the electrically movable start-up hole 10 is in thefirst state, there is little chance that a playing ball enters theelectrically movable start-up hole 10, and, on the other hand, when theelectrically movable start-up hole 10 is in the second state, the chancethat a playing ball enters the electrically movable start-up hole 10increases. The above-described start-up hole detection switch 9 s isalso provided in the electrically movable start-up hole 10, and, whenthis start-up hole detection switch 9 s detects a playing ball entering,“a lottery for a bonus game” is held as well. Here, the electricallymovable start-up hole 10 serves as a start-up hole controlled to adjustvariations and ununiformity in the number of playing balls entering inthe start-up hole 9. In addition, both a playing ball entering thestart-up hole 9 and a playing ball entering the electrically movablestart-up hole 10 are detected by the same start-up detection switch 9 s,and therefore, “the start-up hole 9” includes the electrically movablestart-up hole 10 in the following descriptions.

Then, a bonus game gate 11 is provided further below the start-up hole9. The bonus game gate 11 is usually kept closed by a bonus game gateopening and closing part 11 b to prohibit playing balls from entering.By contrast with this, when a special game described later starts, thebonus game gate opening and closing part 11 b opens and serves as a trayfor guiding playing balls into the bonus game gate 11, so that playingballs can enter the bonus game gate 11. A bonus game gate detectionswitch 11 s is provided in the bonus game gate 11, and, when the bonusgame gate detection switch 11 s detects a playing ball entering, apredetermined value of credit is provided. Here, with the presentembodiment, the start-up hole 9 serves as the ball receiving hole, andthe start-up detection switch 9 s serves as the ball receiving holedetection part.

A discharge hole 12 for discharging playing balls which have failed toenter both the start-up hole 9 and the bonus game gate 11, is providedfurther below the bonus game gate 11, that is, in the bottom of theplayfield 6.

In addition, a decorative member 14 that influences falling of playingballs is provided at the center of the game board 2. A performancedisplay device 13 including a liquid crystal display (LCD), is providedat approximately the center of the decorative member 14, and aperformance object device 15 including four star-shaped objects havingdifferent sizes, is provided on the right side of the performancedisplay device 13. Here, although with the present embodiment, theperformance display device 13, which is a liquid crystal display, isused as a display device, circular reels, a seven-segment LED display, adot matrix display may be used.

This performance display device 13 displays images during a waitingperiod in which a game is not played, and images corresponding to theprogress of a game. Particularly, three performance symbols 70 arearranged in a line to inform the result of a lottery for a bonus gamedescribed later, and, when these three performance symbols are stoppedand displayed such that specific same performance symbols 70 arearranged (e.g. 777), it is informed that the result of the lottery iswin. To be more specific, when a playing ball enters the start-up hole9, each of the three performance symbols 70 is scrolled and displayed,and, after a predetermined period of time has passed, the performancesymbols 70 are stopped and displayed. Here, the game machine 100 may beconfigured to give a great expectation to win a lottery for a bonusgame, to the player by displaying various images, characters and soforth while the performance symbols 70 are variably displayed.

The above-described performance object device 15 gives an expectation tothe player by their actions. The performance object device 15 can makeany of the stars having different sizes illuminate, flash or swing, forexample. The game machine 100 is configured to give various expectationsto the player by the actions of the performance object device 15.

In addition, a performance button 26 that the player can push isprovided on the tray unit 4. This performance button 26 is enabled, forexample, when a massage to operate the performance button 26 isdisplayed on the performance display device 13. Here, a performancebutton detection switch 26 s is provided on the performance button 26,and, when this performance button detection switch 26 s detectsoperation of the player, additional performance is carried out inresponse to this operation. Here, the above-described rate switchingbutton 24 and the settlement button 25 are buttons that the player canpush like the performance button 26. A rate switching button detectionswitch 24 s and the settlement button detection switch 25 s are providedon the rate switching button 24 and the settlement button 15,respectively and can detect the player operating the buttons.

Moreover, the game machine 100 has an audio output device 18 (see. FIG.8 described later) including a speaker to carry out audio performance inaddition to the performance by the above-described performance devices.

Then, a special symbol display device 19 and a special symbolreservation display 20 are provided in the lower right corner of theplayfield 6.

Moreover, even if a playing ball enters the start-up hole 9 while thespecial symbols are being variably displayed or a special game(described later) is played, when a lottery for a bonus game cannot beheld immediately, the right of the bonus game is reserved under aspecific condition. To be more specific, the random number fordetermining a special symbol obtained at the time a playing ball entersthe start-up hole 9, is stored to reserve the right. The maximum numberof balls to be reserved is set 4, and this number is displayed on thespecial symbol reservation display 20.

Here, when one ball is reserved, one LED of the special symbolreservation display 20 is turned on, and, when two balls are reserved,two LEDs in the special symbol reservation display 20 are turned on. Inaddition, when three balls are reserved, three LEDs in the specialsymbol reservation display 20 are turned on, and, when four balls arereserved, four LEDs in the special symbol reservation display 20 areturned on.

Moreover, a discharge hole guidepath 44 that guides a playing ballentering the discharge hole 12 to the tray 40 (specifically, a receivinghole 40 a provided as an inlet of the tray 40) is provided on the backsurface of the game board 2. This discharge guidepath 44 is formed as apassageway connecting the discharge hole 12 and the receiving hole 40 a,and allows playing balls to roll through this passageway. In addition,the discharge guidepath 44 has a downslope from the discharge hole 12 tothe receiving hole 40 a, and the playing balls guided from the dischargehole 12 to the discharge hole guidepath 44 go down and roll toward thereceiving hole 40 a through the discharge hole guidepath 44. This“downslope” has an enough inclining angle to prevent playing ballsguided from the discharge hole 12 to the discharge hole guidepath 44from flowing back to the discharge hole 12. If a playing ball launchedthrough the tray 40 enters the discharge hole 12, the playing ballreturns to the tray 40 through the discharge guidepath 44.

In addition, as shown in FIG. 6 and FIG. 7, the game board 2 is providedwith a received ball guidepath 45 that guides a playing ball entering inthe start-up hole 9 to the discharge hole guidepath 44, and a bonus gameball guidepath 46 that guides a playing ball entering the bonus gamegate 11 to the discharge hole guidepath 44, on the back surface.Moreover, playing balls which have failed to arrive at the playfield 6because the playing balls are launched with a low launching strength(that is, playing balls which have failed to go over the ball returnpreventing part 5 c) are regarded as foul balls, and join in thedischarge hole guidepath 44 from a foul ball passageway 47. Accordingly,the playing balls launched via the tray 40 all return to the tray 40 andthe playing balls circulate in the game machine 100. Here, the start-uphole detection switch 9 s is provided in the received ball guidepath 45,and the bonus game gate detection switch 11 s is provided in the bonusgame ball guidepath 46. Moreover, a foul ball detection switch 47 s isprovided in the foul ball passageway 47 as well, and, when this foulball detection switch 47 s detects a playing ball, the playing ball iscounted as a foul ball.

Then, cover part 48 (see FIG. 4 and FIG. 5) that covers the tray 40 toprevent the playing balls in the tray 40 from being taken out, isprovided over the tray 40. This cover part 48 is made of a transparentplate and allows the player to visually check if playing balls areaccumulated in the tray 40. In this way, according to the presentembodiment, the tray 40 is covered with the cover part 48, and thereforethe launched playing balls cannot be taken out even if the playing ballsreturn to the tray 40. Therefore, with the present embodiment, it ispossible to play games using only the predetermined number of playingballs enclosed in the game machine 100. Here, a requirement of “thepredetermined number” is to allow the player to always launch playingballs, that is, it is preferred that playing balls have always beensupplied at least in the tray 40 when playing balls are launched. Inaddition, it is preferred that accumulated playing balls still remain inthe tray 40 even if a plurality (e.g. 10 to 20) of playing balls cannotreturn to the tray 40 due to clogging.

Moreover, a main control circuit board 101, a performance controlcircuit board 102, a frame control circuit board 103, a power circuitboard 107, a game information output terminal board 108 and so forth,are provided on the back surface of the game machine 100. In addition, apower plug 50 and a power switch (not shown) which are used to supplypower to the game machine 100, are provided on the power circuit board107.

(The Internal Configuration of a Control Part)

Next, a control part for controlling the progress of a game will bedescribed with reference to the block diagram of FIG. 8 showing the gamemachine 100.

The main control circuit board 101 is a main control part to controlbasic actions of a game. The main control circuit board 101 controls agame by receiving various detection signals from the start-up detectionswitch 9 s and so forth and operating the special symbol display device19, a bonus game gate opening and closing solenoid 11 c and so forth,while controlling signal input/output between the credit control circuitboard 200 and the main control circuit board 101. Here, with the presentembodiment, the main control circuit board 101 serves as the bonus gamedetermination part, the lottery part, the game value providing part, thestorage part and the launch permit part.

This main control circuit board 101 has a main CPU 101 a, a main ROM 101b, a main RAM 101 c, main control input ports and main control outputports (not shown).

The main control input ports are connected to the credit control circuitboard 200, the frame control circuit board 103, the start-up holedetection switch 9 s that detects a playing ball entering the start-uphole 9, the bonus game gate detection switch 11 s that detects a playingball entering the bonus game gate 11, the rate switching buttondetection switch 24 s, the settlement button detection switch 25 s, thelaunched ball detection switch 42 s and foul ball detection switch 47 s.Various signals are inputted to the main control circuit board 101through the main control input ports.

Meanwhile, the main control output ports are connected to a start-uphole opening and closing solenoid 10 c that opens and closes the pair ofmovable parts 10 b in the electrically movable start-up hole 10, thebonus game gate opening and closing solenoid 11 c that opens and closesthe bonus game gate opening and closing part 11 b, the special symboldisplay device 19 that displays special symbols, the special symbolreservation display 20 that displays the number of playing ballsreserved for special symbols, and the game information output terminalboard 108 that outputs external information signals. Various signals areoutputted through the main control output ports.

The main CPU 101 a reads a program stored in the main ROM 101 b andperforms arithmetic processing based on the input signals from eachdetection switch and a timer, and directly controls each device anddisplay, or transmits commands to other circuit boards according to theresult of the arithmetic processing. In addition, when a predeterminedamount of paper money (e.g. 1000 yen) is inserted in the paper moneyinsert slit 21, the main CPU 101 a outputs a launch enabling signal toenable the launch control circuit board 106 to launch playing ballsthrough the frame control circuit board 103 until at least thepredetermined number of playing balls (e.g. 1000) has been launched.

The main ROM 101 b stores the program for game control, and various dataand tables required for playing a game. The main ROM 101 b stores, forexample, a bonus game determination table (see FIG. 9) referred at thetime of a lottery for a bonus game to determine whether or not to win abonus game, and a symbol determination table (see FIG. 10) thatdetermines the special symbol to be stopped. A specific example of eachtable will be described later with reference to FIG. 9 and FIG. 10.Here, the above-described tables are characteristic tables as merelyexamples among tables according to the present embodiment, and manyother tables and programs (not shown) are provided in progress of agame.

The main RAM 101 c serves as a work area for data at the time the mainCPU 101 a performs arithmetic processing and has a plurality of storageareas. The main RAM 101 c has, for example a special symbol reservationcount (U) storage area, a determination storage area, special symbolstorage area, a round game count (R) storage area, a bonus game ballcounter (C) storage area, a stopped symbol data storage area, aperformance transmission data storage area, a special symbol timecounter, a special game timer counter, and a special electricallymovable device control processing data storage area. Here, theabove-described storage areas are merely examples, and many otherstorage areas may be provided.

The game information output terminal board 108 is a circuit board tooutput external information signals generated in the main controlcircuit board 101 to a control device (e.g. a control server and apachinko parlor-dedicated computer) in an amusement place. The gameinformation output terminal board 108 is connected to the main controlcircuit board 101 by wiring, and has a connector to connect externalinformation to the control device and so forth in an amusement place.

The power circuit board 107 has a backup power supply including acapacitor, supplies a power supply voltage to the game machine 100,monitors the power supply voltage supplied to the game machine 100 andoutputs a power interruption detection signal to the main controlcircuit board 101 when the power supply voltage is equal to or lowerthan a predetermined value. To be more specific, a power interruptiondetection signal is in the high level, the main CPU 101 a can operate,and, on the other hand, when a power interruption detection signal is inthe low level, the main CPU 101 a stops operating. A backup power supplyis not limited to a capacitor, but a battery is possible, and acombination of a capacitor and a battery is also possible.

The performance control circuit board 102 mainly controls eachperformance during play of a game or in awaiting time. This performancecontrol circuit board 102 has a sub-CPU 102 a, a sub-ROM 102 b and asub-RAM 102 c, and is connected to the main control circuit board 101 toenable simplex communication from the main control circuit board 101 tothe performance control circuit board 102. The sub-CPU 102 a reads theprogram stored in the sub-ROM 102 b and performs arithmetic processingbased on a command transmitted from the main control circuit board 101or the input signals from the performance button detection switch 26 sand the timer, and transmits corresponding data to a lamp controlcircuit board 104 or an image control circuit board 105. The sub-RAM 102c serves as a work area for data at the time the sub-CPU 102 a performsarithmetic processing.

The sub-ROM 102 b in the performance control circuit board 102 storesthe program for performance control, and various data and tablesrequired for playing a game. To be more specific, the sub-ROM 102 storesa performance pattern determination table to determine a performancepattern based on a variation pattern specifying command received fromthe main control circuit board, a performance symbol determination table(see FIG. 11) to determine a combination of performance symbols 70 to bestopped and displayed. Here, the above-described tables arecharacteristic tables as merely examples among tables according to thepresent embodiment, and many other tables and programs (not shown) areprovided in progress of a game.

The sub-RAM 102 c in the performance control circuit board 102 serves asa work area for data at the time the sub-CPU 102 a performs arithmeticprocessing and has a plurality of storage areas. To be more specific, acommand receiving buffer, a performance pattern storage region, aperformance symbol storage area and so forth, are provided on the subRAM 102 c. Here the above-described storage areas are merely examples aswell, many other storage area may be provided.

The frame control circuit board 103 performs error detection andcontrols communication between the main control circuit board 101 andthe launch control circuit board. This frame control circuit board 103has a payout CPU, a payout ROM and a payout RAM (not shown), and isconnected to the main control circuit board 101 to enable duplexcommunication with the main control circuit board 101. The payout CPUreads a program stored in the payout ROM and performs arithmeticprocessing, based on the input signals from the door opening and closingswitch 33 and the timer, and transmits corresponding data to the maincontrol circuit board 101 based on the arithmetic processing. At thistime, the payout RAM serves as a work area for data at the time thepayout CPU performs arithmetic processing. In addition, upon receiving alaunch enabling signal from the main control circuit board 101, thepayout RAM outputs the inputted launch enabling signal to the launchcontrol circuit board 106.

The lamp control circuit board 104 controls lightning of a performanceillumination device 16 provided on the game board 2 and controls drivingof a motor to change the direction to emit light. In addition, the lampcontrol circuit board 104 controls electric conduction of a drivingsource such as a solenoid or a motor that activates the performanceobject device 15. This lamp control circuit board 104 is connected tothe performance control circuit board 102 and performs theabove-described various kinds of control, based on data transmitted fromthe performance control circuit board 102.

The image control circuit board 105 has an image CPU, an image ROM, animage RAM and a VRAM (not shown) to control image display of theperformance display device 13, and also has an audio CPU, an audio ROMand an audio RAM. The image control circuit board 105 is connected tothe performance control circuit board 102 to enable duplex communicationwith the performance control circuit board 102, and connected with theperformance display device 13 and the audio output device 18 at theoutput side.

The image ROM stores a large number of performance symbols 70 and imagedata on background images and so forth to be displayed on theperformance display device 13. The image CPU reads a predeterminedprogram based on a command transmitted from the performance controlcircuit board 102. The image CPU also reads predetermined image datafrom the image ROM into a VRAM to control display of the performancedisplay device 13. The image CPU performs various types of imageprocessing, such as background image display processing, performancesymbol display processing, and character image display processing, onthe performance display device 13. A background image, a performancesymbol image and a character image are superimposed and displayed on thedisplay screen of the performance display device 13. In other words, theperformance symbol image and the character image are displayed in such amanner as to be shown at a less depth than the background image whenviewed from the front. In this case, if the background image and thesymbol image overlap one another in the same position, a known hiddensurface removal technique such as a z-buffer algorism is used to referto a z value in the z-buffer for each image in the image data in orderto preferentially store the symbol image in the VRAM.

In addition, the audio ROM stores a large amount of audio data outputtedfrom the audio output device 18. The audio CPU reads a predeterminedprogram based on a command transmitted from the performance controlcircuit board 102 and controls audio output of the audio output device18.

The credit control circuit board 200 controls communication with themain control circuit board 101 related to progress of a game includingthe start time of the game, the end time of the game and so forth. Uponreceiving a predetermined amount of money (e.g. 1000 JPY, 100 HKD and 10USD) as an inserted medium which is inserted from the paper money insertslot 21, the credit control circuit board 200 outputs a game enablingsignal to enable play of a game until a predetermined number of playingballs (for example, 1000, or, if the rate is changed, 500 or 100) havebeen launched. In addition, the credit control circuit board 200 paysout a ticket by driving the ticket payout motor 202 a, and displayscredit information on the submonitor 30.

In addition, the credit control circuit board 200 has a credit CPU 200a, a credit ROM 200 b, a credit RAM 200 c, and credit controlinput/output ports (not shown). Then, the credit control input/outputports are connected to the main control circuit board 101, a paper moneydetection switch 201 s, the ticket payout motor 202 a and thesub-monitor 30. The credit control input/output ports allow a papermoney insert signal outputted from the paper money detection switch 201s, and a settlement signal and a bonus game signal outputted from themain control circuit board 101 to be inputted, and also allow a gameenabling signal to be outputted to the main control circuit board 101.This game enabling signal contains the credit information at the timepaper money is inserted.

Upon detecting a predetermined amount of paper money (e.g. 1000 yen)being inserted into the paper money insert slit 21, the paper moneydetection switch 201 s outputs a paper money insert signal to the creditCPU 200 a via the credit control input/output port. Here, with thepresent embodiment, the paper detection switch 201 s serves as theinserted medium detection part, and the credit corresponds to an exampleof game values.

Upon receiving driving data outputted from the credit CPU 200 a via thecredit control input/output port, the ticket payout motor 202 a drives amotor.

The credit CPU 200 a reads a program stored in the credit ROM 200 b andperforms arithmetic processing, based on the inputted various signals,and controls output of the various signals.

The credit ROM 200 b stores a program for paper money insert control,and various data and tables required for arithmetic processing.

The credit RAM 200 c serves as a work area for data at the time thecredit CPU 200 a performs arithmetic processing, and has a plurality ofstorage areas. For example, a credit data storage area to store data forcredit information (credit data) is provided in the credit RAM 200 c.This credit data storage area stores the credit of the player, whichincreases and decrease in progress of a game and is updated at anappropriate time.

In addition, the credit CPU 200 a commands the submonitor 30 to displayinformation based on the credit data stored in the credit RAM 200 c. Bythis means, the value of the credit that the player has acquired, isdisplayed on the submonitor 30.

Upon receiving a launch enabling signal from the frame control circuitboard 103, the launch control circuit board 106 enables launching ofplaying balls. Then, the launch control circuit board 106 reads a touchsignal from a touch sensor 3 s and a voltage value from the launchingvolume adjusting part 3 a and controls electric conduction of thelaunching solenoid 4 c to launch a playing ball. Here, the rotatingspeed of the launching solenoid 4 c is set 99 times per second,according to the frequency based on the output period of a crystaloscillator provided in the launch control circuit board 106. By thismeans, the number of launched playing balls per minute is 99 because oneplaying ball is launched every time the launching solenoid 4 c rotatesonce. That is, a playing ball is launched per about 606 milliseconds.

(Various Tables)

Next, various tables stored in the main ROM 101 b will be described indetail with reference to FIG. 9 and FIG. 10. After that, various tablesstored in the sub-ROM 102 b will be described in detail with referenceto FIG. 11.

(Bonus Game Determination Table)

FIG. 9 shows a bonus game determination table referred to determinewhether or not to win a bonus game in “a lottery for a bonus game”.

Referring to this bonus game determination table, the main CPU 101 adetermines whether the result of the lottery for a bonus game is “win”“small win” or “loss”, based on the obtained random number fordetermining a special symbol. In this table, three random numbers fordetermining a special symbol, “7”, “33” and “77” are determined as“win”, and 600 random numbers for determining a special symbol, “100” to“699” are determined as “small win”. The other 397 random numbers fordetermining a special symbol is determined as “loss”. Therefore, theprobability of determining as “win” is 1/3333 because the range of therandom numbers for determining a special symbol is 0 to 999.

(Symbol Determination Table)

FIG. 10 shows a symbol determination table to determine the specialsymbol to be stopped. FIG. 10A shows a symbol determination table forwin to determine the symbol to be stopped; FIG. 10B shows a symboldetermination table to for small win determine the symbol to be stopped;and FIG. 100 shows a symbol determination table for loss to determinethe symbol to be stopped.

When a win is determined, the main CPU 101 a refers to the symboldetermination table shown in FIG. 10A and determines the kind of aspecial symbol (data for the symbol to be stopped) based on the acquiredrandom number for a bonus game. For example, according to the symboldetermination table shown in FIG. 10A, the main CPU 101 a determines“01” (special symbol 1) as data for the symbol to be stopped when therandom numbers for a bonus game symbol are “0” to “32”, and, when therandom numbers for a bonus game symbol are “33” to “99”, determines “02”(special symbol 2) as data for the symbol to be stopped.

In addition, a small win is determined, the main CPU 101 a refers to thesymbol determination table shown in FIG. 10B and determines “03”(special symbol A) as data for the symbol to be stopped when the randomnumbers for a small win symbol are “0” to “4”, and, when the randomnumbers for a small win symbol are “50” to “99”, the main CPU 101 adetermines “06” (special symbol D) as data for the symbol to be stopped.

Moreover, when a loss is determined, the main CPU 101 a refers to thesymbol determination table shown in FIG. 100 and determines “00”(special symbol 0) as data for the symbol to be stopped.

Then, at the time special symbols start being variably displayed, themain CPU 101 a creates a performance symbol specifying command asspecial symbol information, based on the kind of the determined specialsymbol (data for the symbol to be stopped). Here, a performance symbolspecifying command is formed by data of 2 bytes, and includes MODE dataof 1 byte for identifying the category of a control command and DATAdata of 1 byte representing the content (function) of the executedcontrol command. The same applies to a variation pattern specifyingcommand and so forth described later.

(Performance Symbol Determination Table)

FIG. 11A shows a performance symbol determination table for win todetermine a combination of the performance symbol's 70 to be stopped anddisplayed when a win is determined. FIG. 11B shows a performance symboldetermination table for small win to determine a combination of theperformance symbols 70 to be stopped and displayed when a small win isdetermined.

When win is determined, the sub-CPU 102 a refers to the performancesymbol determination table for win shown in FIG. 11A, and determinesperformance symbol data based on a received performance symboldesignating command. Meanwhile, when small win is determined, thesub-CPU 102 a refers to the performance symbol determination table forsmall win shown in FIG. 11B, and determines performance symbol databased on a received performance designating symbol command. For example,as seen from the performance symbol determination table for win shown inFIG. 11A, when performance symbol specifying command “E0H01H”representing special symbol 1 is received, a combination of three sameperformance symbols “7 7 7” is determined, and, when performance symboldesignating command “E0H01H” representing special symbol 2 is received,a combination of three same performance symbols “3 3 3” is determined.Likewise, in a case of small win, when performance symbol designatingcommand “E0H03H” representing special symbol A is received, acombination of three same performance symbols “2 2 2” is determined,and, when performance symbol designating command “E0H04H” representingspecial symbol B is received, a combination of three same performancesymbols “6 6 6” is determined. In addition, when performance symboldesignating command “E0H05H” representing special symbol C is received,a combination of three same performance symbols “8 8 8” is determined.Here, when performance symbol designating command “E0H06H” representingspecial symbol D, a combination of three performance symbols includingone “4” is determined.

(Descriptions of the Kinds of a Bonus Game)

With the present embodiment, “win” means that a right to play a bonusgame is acquired by winning a lottery for a bonus game held on conditionthat a playing ball enters the start-up hole 9. In a “bonus game”, 15times of round games are played, where the bonus game gate 11 is open.The maximum period of time over which the bonus game gate 11 is open fora total of round games, is set 29.5 seconds, and, if a predeterminednumber of playing balls (e.g. 10) enter the bonus game gate 11 withinthat period of time, one round game ends. Then, if a playing ball entersthe bonus game gate 11, so that a predetermined value of credit isprovided. That is, a “bonus game” can greatly increase credit because apredetermined value of credit is provided every time a playing ballenters the bonus game gate 11.

With the present embodiment, as shown in FIG. 10A, the value of creditprovided in the bonus game associated with special symbol 1 is “6000”,and the value of credit provided in the bonus game associated withspecial symbol 2 is “3000”. This is the total value of the creditprovided in one bonus game, and practically, the credit is not providedat a time but a small portion of the credit is provided several times.In this way, a plurality of small portions of credit are provided (asmall portion of the credit is provided several times), it is possibleto provide credit every time a playing ball enters the bonus game gate11, or make the player feel as if the value of credit is incrementedevery time a playing ball enter the bonus game gate 11.

Meanwhile, “small win” means that a right to obtain credit is providedby getting a small win in a lottery for a bonus game held on conditionthat a playing ball enters the start-up hole 9. To be more specific, ina “small win”, the bonus game gate 11 does not open and a predeterminedvalue of credit is provided (at a time) when a combination ofperformance symbols 70 corresponding to small win (see FIG. 11) isdisplayed.

With the present embodiment, as shown in FIG. 10B, the values of creditprovided in a small win are “5” to “100”, which are significantlysmaller than a bonus game. Therefore, the credit is provided to theplayer at a time because it is not beneficial for the player to providea small portion of credit several times.

Next, progress of a game in the game machine 100 will be explained usinga flowchart.

(Main Processing in the Main Control Circuit Board)

Now, main processing in the main control circuit board 101 will beexplained with reference to FIG. 12.

When the power circuit board 107 supplies power, the main CPU 101 aresets the system and performs the following main processing.

First, the main CPU 101 a performs initialization processing in stepS10. In this processing, the main CPU 101 a reads a boot program fromthe main ROM in response to turn-on of the power supply and performsprocessing to initialize flags stored in the main RAM.

In step S20, the main CPU 101 a performs processing to update a randomnumber for performance used to determine a variation mode (variationperiod of time) of special symbols.

In step S30, the main CPU 101 a updates an initial random number fordetermining a special symbol and an initial random number for a bonusgame symbol. After that, the processing in the step S20 and theprocessing in the step S30 are repeatedly performed until apredetermined interrupt processing is performed.

(Timer Interrupt Processing in the Main Control Circuit Board)

Timer interrupt control processing in the main control circuit board 101will be described with reference to FIG. 13.

A clock pulse generation circuit for resetting, which is provided in themain control circuit board 101, generates a clock pulse perpredetermined period (4 milliseconds) to perform timer interruptprocessing described later.

First, in step S50, the main CPU 101 a evacuates information stored in aregister in the main CPU 101 a to a stack region.

In step S60, the main CPU 101 a performs time control processing toupdate various timer counters, such as update processing of a specialsymbol time counter and update processing of a special game timercounter to measure a period of time for which a special electricallymovable device is open.

In step S70, the main CPU 101 a performs processing to update randomnumbers, such as a random number for determining a special symbol and arandom number for a bonus game symbol. To be more specific, each of therandom numbers and each of the random number counters are updated bybeing incremented by “1”. When the random number counter incremented by1 exceeds the maximum value in the random number range (that is, whengoing the full circle of the random number counter), the random numbercounter is reset to zero, and the random number is newly updated fromthe initial random number at that time.

In step S80, the main CPU 101 a updates initial random numbers fordetermining a special symbol and a bonus game symbol.

In step S90, the main CPU 101 a performs input control processing. Inthis processing, the main CPU 101 a performs input processing todetermine whether or not the main CPU 101 a has received signals, asinput, from the start-up hole detection switch 9 s, the bonus game gatedetection switch 11 s, the rate switching button detection switch 24 s,the launched ball detection switch 42 s and the foul ball detectionswitch 47 s. To be more specific, when receiving a detection signal fromthe start-up detection switch 9 s, the main CPU 101 a obtains a randomnumber for determining a special symbol, a random number for a bonusgame symbol and a random number for performance, and stores the obtainedrandom numbers in the special symbol storage area. Meanwhile, whenreceiving various detection signals from the bonus game gate detectionswitch 11 s, the main CPU 101 a adds a predetermined value of credit toupdate the credit. When receiving a detection signal from the rateswitching button detection switch 24 s, the main CPU 101 a changes thecurrent set rate. When receiving a detection signal from the launchedball detection switch 42 s, the main CPU 101 a subtracts the number ofballs allowed to be launched (KY), and, when receiving a detectionsignal from the foul ball detection switch 47 s, adds the number ofballs allowed to be launched (KY). If a detection signal has not beeninputted from the launched ball detection switch 42 s just before, themain CPU 101 a does not add the number of balls allowed to be launched(KY) even if receiving a detection signal from the foul ball detectionswitch 47 s, and therefore can prevent incorrect processing includingunconsidered adding, or incorrect operation.

In step S100, when receiving a game enabling signal from the creditcontrol circuit board 200, the main CPU 101 a performs play startcontrol processing to set predetermined data for starting a permittedgame (i.e. a game permitted to launch a predetermined range of number ofplaying balls). This play start control processing will be described indetail with reference to FIG. 17.

In step S200, the main CPU 101 a performs play end control processing toset predetermined data for ending the permitted game. This paly endcontrol processing will be described with reference to FIG. 18.

In step S300, the main CPU 101 a performs special electrically movabledevice control processing to hold lottery for a bonus game and control aspecial electrically movable device. Detailed descriptions will beexplained with reference to FIG. 19.

In step S400, the main CPU 101 a performs data creation processing. Datacreated by this data creation processing includes: start-up hole openingand closing solenoid data for driving the start-up opening and closingsolenoid 10 c; bonus game gate opening and closing solenoid data fordriving the bonus game gate opening and closing solenoid 11 c; specialsymbol display device data for lightning and displaying the specialsymbol display device 19; reservation display data for lightning anddisplaying the special symbol reservation display 20; and checkout timecredit data for settling credit.

In step S500, the main CPU 101 a performs output control processing. Inthis processing, the main CPU 101 a performs port output processing tooutput the signal generated in the step S400. In addition, the main CPU101 a performs display device output processing to output the specialsymbol display device data and the reservation display data created inthe step S400. Moreover, the main CPU 101 a performs commandtransmission processing to transmit a command set in the performancetransmission data storage area in the main RAM 101 c.

In step S600, the main CPU 101 a restores the information evacuated inthe step S50 to the register in the main CPU 101 a.

(Input Control Processing)

Now, input control processing in the main control circuit board 101 willbe described with reference to FIG. 14.

First, in step S91, the main CPU 101 a determines whether or not adetection signal from the start-up detection switch 9 s has beeninputted, that is, whether or not a playing ball has entered thestart-up hole 9, and performs start-up hole detection switch inputprocessing to set predetermined data for determining whether or not towin a bonus game. This start-up hole detection switch input processingwill be described in detail later with reference to FIG. 15.

In step S92, the main CPU 101 a performs bonus game gate detectionswitch input processing to determine whether or not a detection signalfrom the bonus game gate detection switch 11 s has been inputted, thatis, a playing ball has entered the bonus game gate 11, and determinesthe value of credit to be provided (see FIG. 16). In addition, the mainCPU 101 a adds and updates a counter in the bonus game ball counter (C)storage area that counts the playing balls received in the bonus gamegate 11.

In step S93, the main CPU 101 a determines whether or not a signal hasbeen inputted from the rate switching button detection switch 24 s, thatis, the rate switching button 24 has been operated. In this rateswitching button detection switch input processing, when it isdetermined that the rate switching button 24 has been operated,processing to switch the current set rate to another rate is performed.

Rate 1: 100 playing balls can be launched by inserting 1000 yen;

Rate 2: 250 playing balls can be launched by inserting 1000 yen;

Rate 3: 500 playing balls can be launched by inserting 1000 yen; and

Rate 4: 1000 playing balls can be launched by inserting 1000 yen

That is, four rates from “rate 1” to “rate 4” are arranged. Here, rate 4allows to the player to play a game at the lowest unit cost (one playingballs is equivalent to 1 yen), while rate 1 allows the player to play agame at the highest unit cost (one playing balls is equivalent to 10yen). Here, “unit cost” refers to the value for one playing ball withrespect to an amount of inserted money (e.g. 1000 JPY, 100 HKD and 10USD).

In step S94, the main CPU 101 a determines whether or not a signal fromthe settlement button detection switch 25 s has been inputted, that is,the player operates to end the game in the game machine, and performssettlement button detection switch input processing to settle thecredit. In this processing, information on the current credit of theplayer is stored as checkout time credit information.

In step S95, the main CPU 101 a determines whether or not a signal fromthe launched ball detection switch 42 s has been inputted, that is,determines whether or not a playing ball has been launched, and performslaunched ball detection switch input processing to subtract the numberof balls allowed to be launched (KY). In this processing, “1” issubtracted from the number of balls allowed to be launched (KY) everytime the launched ball detection switch 42 s detects a signal.

In step S96, the main CPU 101 a determines whether or not a signal hasbeen inputted from the foul ball detection switch 47 s, that is, alaunched ball has failed to arrive at the playfield and returned to thetray 40, and performs launched ball detection switch input processing toadd the number of balls allowed to be launched (KY). In this processing,“1” is added to the number of balls allowed to be launched (YK) everytime a signal is inputted from the foul ball detection switch 47 s.

(Start-Up Hole Detection Switch Input Processing)

Now, start-up hole detection switch input processing in the main controlcircuit board 101 will be explained with reference to FIG. 15.

First, in step S91-1, the main CPU 101 a determines whether or not adetection signal has been inputted from the start-up hole detectionswitch 9 s. If a detection signal has been inputted from the start-updetection switch 9 s, the step moves to step S91-2, and, on the otherhand, if a detection signal has not been inputted from the start-up holedetection switch 9 s, the main CPU 101 a ends the start-up detectionswitch input processing.

In the step S91-2, the main CPU 101 a determines whether or not data setin the special symbol reservation count (U) storage area is smaller than4. If the data set in the special symbol reservation count (U) storagearea is smaller than 4, the step moves to step S91-3, and, on the otherhand, if the data set in the special symbol reservation count (U)storage area is not smaller than 4, the main CPU 101 a ends the start-uphole detection switch input processing.

In the step S91-3, the main CPU 101 a adds “1” to the special symbolreservation count (U) storage area and stores the result.

In step S91-4, the main CPU 101 a acquires a random number fordetermining a special symbol, searches empty storage parts sequentiallyfrom a first storage part in the special symbol storage area, and storesthe acquired random number for determining a special symbol in an emptystorage part.

In step S91-5, the main CPU 101 a acquires a random number for a bonusgame symbol, searches empty storage parts sequentially from the firststorage part in the special symbol storage area, and stores the acquiredrandom number for a bonus game symbol in an empty storage part.

In step S91-6, the main CPU 101 a acquires a random number forperformance, searches empty storage parts sequentially from the firststorage part in the special symbol storage area, stores the acquiredrandom number for performance in an empty storage part, and ends thestart-up hole detection switch input processing.

By this means, the random number for determining a special symbol, therandom number for a bonus game symbol and the random number forperformance, are stored in the predetermined storage parts in thespecial symbol storage area.

(Bonus Game Gate Detection Switch Input Processing)

Now, bonus game gate detection switch input processing in the maincontrol circuit board 101 will be explained with reference to FIG. 16.

First, in step S92-1, the main CPU 101 a determines whether or not adetection signal has been inputted from the bonus game gate detectionswitch 11 s. If a detection signal has been inputted from the bonus gamegate detection switch 11 s, the step moves to step S92-2, and, on theother hand, when a detection signal has not been inputted from the bonusgame gate detection switch 11 s, the main CPU 101 a ends the bonus gamegate detection switch input processing.

In the step S92-2, the main CPU 101 a adds the counter in the bonus gameball counter (C) storage area that counts playing balls received in thebonus game gate 11, and updates the result.

In step S92-3, the main CPU 101 a performs credit setting processing. Inthis processing, a predetermined value of credit is provided. With thepresent embodiment, a prescribed value “10” of credit is provided everytime a playing ball enters the bonus game gate.

Here, in the step S400, credit data is created based on the determinedvalue of credit, and, in the step S500, the credit data is transmittedto the credit control circuit board 200. Then, the credit controlcircuit board 200 carries out bonus game performance on the submonitor30 based on the received credit data. For example, FIG. 21A shows aperformance image representing an example of bonus game performance onthe submonitor 30. In the figure, balloons numbered “10”, “50”, “60” and“80” . . . fly, and one of them has burst. As shown in FIG. 21B, thisperformance has a scenario where a balloon bursts every time a playingball enters the bonus game gate, and the number on the burst balloon isadded to the value of credit. This performance scenario can make theplayer feel as if it is possible to acquire random values of credit in abonus game.

In the step S92-3, the main CPU 101 a holds a special lottery. This“special lottery” is a lottery to determine whether or not the playercan acquire a right to play a “special bonus game” in addition to thisbonus game. With the present embodiment, if the player wins a speciallottery, the player can play another bonus game having the same scenarioas this bonus game, or another bonus game having a completely differentscenario. Then, the probability of winning a special bonus game is setto a significantly low rate such as “1/10000”. In addition, this speciallottery is not held during a special bonus game, but is held at the timeof detection by the start-up hole detection switch 9 s.

Here, this “special bonus game” may be so-called jackpot (includingprogressive jackpot in a broad sense), and may provide a right toparticipate in jackpot (jackpot participation right).

In addition, by giving suggestion or information about a special lotteryin the above-described bonus game performance, it is possible to providemore exciting performance. For example, in FIG. 22A, a word “JPCHANCE!!” is displayed when a balloon bursts, in the bonus game performanceexplained with reference to FIG. 21A. By this means, it is possible togive to the player a great expectation to not only add credit but alsoget an additional game value. This suggestion or information may beprovided not only at the time the player wins a special lottery, but maybe provided randomly or by lottery.

In step S92-4, the main CPU 101 a determines whether or not the playerhas won a special lottery in the step S92-3. When the player has not wona special lottery, the main CPU 101 a ends the bonus game gate detectionswitch input processing, and, on the other hand, when the player has wona special lottery, the main CPU 101 a turns on a flag (special lotterywinning flag) in a special winning flag storage area provided in themain RAM 101 c.

(Play Start Control Processing)

Now, play start control processing in the main control circuit board 101will be explained with reference to FIG. 17.

In step S101, the main CPU 101 a determines whether or not a gameenabling signal to enable a game has been inputted from the creditcontrol circuit board 200, and, when the main CPU 101 a determines thata game enabling signal has been inputted, the step moves to step S102,and, on the other hand, when the main CPU 101 a does not determine thata game enabling signal has been inputted, the main CPU 101 a ends theplay start control processing.

In step S102, the main CPU 101 a sets the number of balls allowed to belaunched (KY) corresponding the credit, in a KY storage area provided inthe main RAM 101 c, according the credit information contained in thegame enabling signal.

In step S103, the main CPU 101 a sets launch permit data in launchpermit data storage area in order to permit the launch control circuitboard 106 to launch playing balls, and ends the play start controlprocessing.

(Play End Control Processing)

Now, play end control processing in the main control circuit board 101will be described with reference to FIG. 18.

In step S201, the main CPU 101 a determines whether or not the number ofballs allowed to be launched (KY) is “0” (i.e. “KY=0”). When determiningthat KY is not “0”, the main CPU 101 a ends the play end controlprocessing, and, on the other hand, when the main CPU 101 a determinesthat KY is “0”, the step moves to step S202.

In the step S202, the main CPU 101 a clears the launch permit data toend the play end control processing. Launching is stopped by clearingthe launch permit data in the step S202.

Here, any technique may be used for stopping launching based on play endcontrol processing as long as a playing ball is not launched even if theplayer operates the operation handle 3, for example, a configuration ispossible where detection by the touch sensor 3 s is disabled, or thevoltage value of the launching volume adjusting part 3 a is not read.

(Special Electrically Movable Device Control Processing)

Now, special electrically movable device control processing will beexplained with reference to FIG. 19.

The main CPU 101 a loads the value for special electrically movabledevice control processing data in step 301; refers to a branch targetaddress from the loaded special electrically movable device controlprocessing data in the step 302; moves the step to special symbol memorydetermination processing (step S310) when the special electricallymovable device control processing data is equal to 0; moves the step tospecial symbol variation processing (step S320) when the specialelectrically movable device control processing data is equal to 1, movesto the step to special symbol stop processing (step S330) when thespecial electrically movable device control processing data is equal to2; moves the step to bonus game processing (step S340) when the specialelectrically movable device control processing data is equal to 3; movesthe step to small win processing (step S350) when the specialelectrically movable device control processing data is equal to 4; andmoves to the step to special bonus game processing (step S360) when thespecial electrically movable device control processing data is equal to5. This “special electrically movable device control processing data” isset in each subroutine in special electrically movable device controlprocessing according to need, as described later, so that thesubroutines required for the game are processed in an appropriatemanner.

In the step S310, the main CPU 101 a performs special symbol memorydetermination processing to hold a lottery for a bonus game anddetermine the special symbol to be stopped and displayed. Detaileddescriptions will be explained with reference to FIG. 20.

In the special symbol variation processing in the step S320, the mainCPU 101 a performs processing to determine whether or not a variationperiod of time for special symbols has passed. To be more specific, themain CPU 101 a determines whether or not the variation period of timefor special symbols determined in the step S310 has passed (i.e. thespecial symbol time counter=0?), and, when determining that thevariation period of time for special symbols has not passed, the mainCPU 101 a ends this special symbol variation processing while keeping“special electrically movable device control processing data=1”, andperforms the next subroutine. When determining that the variation periodof time for special symbols has passed, the main CPU 101 a clears thespecial symbol variation display data, and stops and displays thespecial symbol determined in the step S310 on the special symbol displaydevice 19. By this means, the special symbol is stopped and displayed onthe special symbol display device 19, and therefore the result of thedetermination of a bonus game is informed to the player. Finally, themain CPU 101 a changes “special electrically movable device controlprocessing data=1” to “special electrically movable device controlprocessing data=2” to prepare to move the step to special symbol stopprocessing, and ends the special symbol variation processing.

In the special symbol stop processing in step S330, the main CPU 101 aperforms processing to identify the special symbol stopped anddisplayed. To be more specific, the main CPU 101 a first determineswhether or not the special symbol stopped and displayed is a bonus gamesymbol. When determining that the special symbol is a bonus game symbol,the main CPU 101 a changes “special electrically movable device controlprocessing data=2” to “special electrically movable device controlprocessing data=3” to prepare to move the step to bonus game processing,and ends the special symbol stop processing. On the other hand, whendetermining that the special symbol is not a bonus game symbol, the mainCPU 101 a changes “special electrically movable device controlprocessing data=2” to “special electrically movable device controlprocessing data=0” to prepare to move the step to special symbol memorydetermination processing, and ends the special symbol stop processing.

In bonus game processing in step S340, the main CPU 101 a drives thebonus game gate opening and closing solenoid 11 c and performsprocessing to open and close the bonus game gate 11. To be morespecific, the main CPU 101 a outputs driving data for the bonus gamegate opening and closing solenoid 11 c to open the bonus game gateopening and closing part 11 b, sets an opening period of time 29.5seconds in the special game timer counter, and opens the bonus game gateopening and closing part 11 b for up to 29.5 seconds. If a predeterminednumber of playing balls enter the bonus game gate 11 during this openingperiod of time (for example, the bonus game ball counter=5), or themaximum opening period of time has passed (the special game timercounter=0), the main CPU 101 a stops output of driving data for thebonus game gate opening and closing solenoid 11 c and closes the bonusgame gate opening and closing part 11 b. By this means, one round gameends. This control of a round game is performed repeatedly fifteentimes. After a total number of fifteen round games have been performed,if the special winning flag has not turned on, the main CPU 101 achanges “special electrically movable device control processing data=3”to “special electrically movable device control processing data=1” toprepare to move the step to special symbol memory determinationprocessing, and ends the bonus game processing. On the other hand, ifthe special winning flag has been turned on, the main CPU 101 a changes“special electrically movable device control processing data=3” to“special electrically movable device control processing data=5” toprepare to move the step to special bonus game processing, and ends thebonus game processing.

In small win processing in step S350, the main CPU 101 a adds apredetermined value of credit corresponding to a small win symbol andupdates the result. After that, the main CPU 101 a changes “specialelectrically movable device control processing data=4” to “specialelectrically movable device control processing data=0” to prepare tomove the step to special symbol memory determination processing, andends the small win processing.

In special bonus game processing in step S360, the main CPU 101 aperforms again the bonus game having been played just before, orperforms another bonus game having a completely different scenario.Then, when the bonus game ends, the main CPU 101 a changes “specialelectrically movable device control processing data=5” to “specialelectrically movable device control processing data=0” to prepare tomove the step to special symbol memory determination processing, andends the special bonus game processing.

(Special Symbol Memory Determination Processing)

Now, special symbol memory determination processing in the main controlcircuit board 101 will be described with reference to FIG. 20.

In step S310-1, the main CPU 101 a determines whether or not specialsymbols are being variably displayed. Here, when special symbols arebeing variably displayed (the special symbol time counter≠0), the mainCPU 101 a ends the special symbol memory determination processing, and,on the other hand, when special symbols are not being variably displayed(the special symbol time counter=0), the main CPU 101 a moves the stepto step 310-2.

In the step S310-2, the main CPU 101 a determines whether or not thereare one or more special symbol reservation count (U) storage areasunless special symbols are not being variably displayed. Whendetermining that there are one or more special symbol reservation count(U) storage areas, the main CPU 101 a moves the step to step S310-3,and, on the other hand, when determining that there are not one or morespecial symbol reservation count (C) storage areas, ends the specialsymbol memory determination processing.

In the step S310-3, the main CPU 101 a subtracts “1” from the valuestored in the special symbol reservation count (U) storage area andstores the result.

In step S310-4, the main CPU 101 a performs shift processing on the datastored in the special symbol reservation storage area corresponding tothe special symbol reservation count (U) storage area subject to thesubtraction in the step S310-2 to the step S310-3. To be more specific,the main CPU 101 a shifts data stored in each of the first storage partto the fourth storage part in the special symbol storage area, to theimmediately preceding storage part. Here, the data stored in the firststorage part is shifted to a determination storage area (the zerostorage part). At this time, the data stored in the first storage partis written to the determination storage area (the zero storage part),and the data having already been written to the determination storagearea (the zero storage part) is deleted from the special symbolreservation storage area. By this means, the random number fordetermining a special symbol, the random number for a bonus game symboland the random number for performance which have been used in theprevious game, are deleted.

In step S310-5, the main CPU 101 a performs bonus game lotteryprocessing, based on the random number for determining a special symbolwritten in the determination storage area (the zero storage part) in thespecial symbol reservation storage area in the step S310-4. In thisbonus game lottery processing, the main CPU 101 a refers to the bonusgame determination table shown in FIG. 9, and determines whether therandom number for determining a special symbol corresponds “win” or“small win”.

In step S310-6, the main CPU 101 a performs special symbol determinationprocessing to determine the special symbol to be stopped and displayed.In this special symbol determination processing, when determining thatthe result of a lottery for a bonus game is win, the main CPU 101 arefers to the symbol determination table shown in FIG. 10A anddetermines data for the bonus game symbol to be stopped, based on therandom number for a bonus game symbol, and, when determining that theresult is small win, refers to the symbol determination table shown inFIG. 10B and determines data for the small win symbol to be stopped,based on the random number for a small win symbol. Meanwhile, whendetermining that the result is loss, the main CPU 101 a refers to thesymbol determination table shown in FIG. 10C and determines data for theloss symbol to be stopped. After that, the main CPU 101 a sets thedetermined data for the symbol to be stopped, in a stopped symbol datastorage area.

In step S310-7, the main CPU 101 a performs variation patterndetermination processing to determine a variation mode of the specialsymbol. In the variation pattern determination processing, the main CPU101 a refers to a variation pattern determination table (not shown) anddetermines a variation pattern, based on the result of the lottery for abonus game, the kind of the special symbol, the special symbolreservation count (U), and the acquired random number for performance.Then, the main CPU 101 a sets a variation pattern specifying commandcorresponding to the determined variation pattern in the performancetransmission data storage area.

In step S310-8, the main CPU 101 a sets, in the special symbol timecounter, a variation period of time (counter value) based on thevariation pattern determined in the step S310-7. Here, the specialsymbol time counter is subject to subtraction processing per 4milliseconds in the step S60.

In step S310-9, the main CPU 101 a performs variable display startprocessing to set variable display data for the special symbol in orderto make the special symbol display device 19 perform variable display(lightning of LEDs) of the special symbol. By this means, when thevariable display data for the special symbol is set, the special symboldisplay device data for lightning LEDs is created in an appropriatemanner in the step S400 and the created data is outputted in step S500,so that variable display of the special symbol display device 19 isperformed. This variable display of the special symbol is continuouslyperformed for the variation period of time set in the step S310-8.

In step S310-10, the main CPU 101 a moves the step to special symbolvariation processing in step S320 by setting “special electricallymovable device control processing data=1”, and ends the special symbolmemory determination processing.

Next, a summary of the performance control circuit board 102 will bebriefly explained.

Upon receiving a command transmitted from the main control circuit board101, the performance control circuit board 102 performs commandreception interrupt processing and stores the received command in areception buffer.

Then, the sub-CPU 102 a in the performance control circuit board 102analyzes the received commands by timer interrupt processing performedin the performance control circuit board 102 per 2 milliseconds, andcreates various data corresponding to respective commands. After that,the generated various data is transmitted to the image control circuitboard 105 and the lamp control circuit board 104.

To be more specific, upon receiving a variation pattern specifyingcommand from the main control circuit board 101, the sub-CPU 102 arefers to the performance pattern determination table stored in thesub-ROM 102 b, and determines a performance pattern for which theperformance display device 13, the audio output device 18, theperformance illumination device 16 and the performance object device 15carry out predetermined performance. Then, the sub-CPU 102 a createsperformance data corresponding to the determined performance pattern,and transmits the performance data to the image control circuit board105 and the lamp control circuit board 104.

In addition, upon receiving a performance symbol specifying commandindicating a bonus game, from the main control circuit board 101, thesub-CPU 102 a refers to the performance symbol determination table for abonus game shown in FIG. 11, and determines performance symbol databased on the received performance symbol specifying command. Then, thesub-CPU 102 a transmits the determined performance symbol data to theimage control circuit board 105 and the lamp control circuit board 104.By this means, a combination of the same specific performance symbols 70are stopped and displayed on the performance display device 13. Here, ina case of a performance symbol specifying command indicating loss, aperformance symbol determination table for loss is stored (not shown),which is configured to avoid the combination of the same specificperformance symbols 70.

Next, a summary of the image control circuit board 105 and the lampcontrol circuit board 104 will be briefly explained.

When data from the performance control circuit board 102 is inputted tothe image control circuit board 105, an audio CPU reads an audio outputdevice control program from an audio ROM and controls audio outputtedfrom the audio output device 18, and an image CPU reads a program froman image ROM and controls image display of the performance displaydevice 13 based on the received performance command.

Likewise, upon receiving data from the performance control circuit board102, the lamp control circuit board 104 reads a performance objectdevice operation program based on the received data to control operationof the performance object device 15, and reads a performanceillumination device control program based on the received performancedata to control the performance illumination device 16.

Here, although with the present embodiment, a configuration including asingle game machine 100 (so-called standalone game machine) has beenexplained, the present invention is not limited to this. For example, asshown in FIG. 23, another configuration is possible, which provides aclient-server game system including a plurality of game machines 100 anda server (central control device). By this means, credit for jackpot canbe accumulated by a plurality of game machines 100, so that it ispossible to provide jackpot with a significantly higher dividend than astandalone type game machine.

Here, although with the present embodiment, a configuration has beenexplained where an inserted mediums is paper money (or hard money), thepresent invention is not limited to this. For example, an insertedmedium may be a token such as a medal or a coin used in a game machine,or money information and point information stored in an informationrecoding medium (e.g. an IC card and a coin).

Here although with the present embodiment, a configuration has beenexplained where a predetermined value of credit is provided for each ofa bonus game and a small win, the present invention is not limited tothis. For example, a prize such as an article, or a ticket that can beexchanged for this prize is possible. The same applies to a specialbonus game.

Here, although with the present embodiment, a configuration has beenexplained where a special lottery is held at the time a playing ballenters the bonus game gate 11, the present invention is not limited tothis. For example, special lottery can be held when a playing ballenters the start-up hole 9 or at the time of a lottery for a bonus game.Here, even if a special lottery is held at the time a playing ballenters the start-up hole 9, or at the time of a lottery for a bonusgame, it is possible to make the player feel as if a special lottery isheld during a bonus game.

In addition, although with the present embodiment, a configuration hasbeen explained where respective values of credit for win and small winare determined in advance as “6000” and “3000”, the present invention isnot limited to this. For example, another configuration is possiblewhere the values of credit are set in a predetermined range (the upperlimit to the lower limit), such as “3000 to 5000”, “10 to 500”, or “upto 8000”, and a lottery is held within the range to determine the valueof credit. In addition, the above-described predetermined range is notset but the values of credit to be provided may be completelyrandomized.

Here, although with the present embodiment, a configuration has beenexplained where a predetermined value of credit is provided in creditsetting processing, the present invention is not limited to this.Another configuration is possible where, for example, the values ofcredit are determined by lotteries in a bonus game, not being completelyrandomized, and finally, the total value of the credit should match thevalue of the credit for the bonus game.

1. A game machine comprising: a game board provided with a game field onwhich playing balls cascade downward; a bonus game determination partconfigured to determine that a bonus game is acquired, the bonus gameproviding a game value when a predetermined condition is met; a ballreceiving hole detection part configured to detect a playing ballentering a ball receiving hole provided in the playfield; and a lotterypart configured to hold a lottery to determine whether or not a specificresult is acquired when the ball receiving hole detection part detectsthe playing ball entering, wherein the bonus game determination partdoes not determine that the bonus game is acquired even when the ballreceiving hole detection part detects the playing ball entering, and, onthe other hand, when the specific result is acquired as a result of thelottery held by the lottery part, determines that the bonus game isacquired.
 2. The game machine according to claim 1, further comprising agame value providing part configured to provide a predetermined gamevalue when the bonus game determination part determines that the bonusgame is acquired.
 3. The game machine according to claim 2, wherein thegame value providing part provides a game medium, as the game value,that can be converted into a predetermined number of playing balls. 4.The game machine according to claim 2, further comprising a storage partconfigured to store predetermined recording information, wherein thegame value providing part provides the recording information stored bythe storage part, as the game value.
 5. The game machine according toclaim 4, wherein the recording information provided as the game value isnumeric information that can be converted into a predetermined number ofplaying balls.
 6. The game machine according to claim 1, furthercomprising: a launching operation detection part configured to detect alaunching operation to launch the playing ball; an inserted mediumdetection part configured to detect whether or not a predeterminedinserted medium is received; a launch permit part configured to, whenthe inserted medium detection part detects the predetermined insertedmedium being received, permit a predetermined number of playing balls tobe launched according to the inserted medium until the predeterminedcondition is met; and a launching part configured to, on condition thatthe launch permit part permits the predetermined number of playing ballsto be launched, launch the playing balls toward the playfield when thelaunching operation detection part detects the launching operation. 7.The game machine according to claim 6, wherein the inserted mediumdiffers from the game value.
 8. The game machine according to claim 1,wherein: the bonus game determined by the bonus game determination partincludes a plurality of kinds of the bonus game; and the lottery partholds a lottery where a result of the lottery is obtained from aplurality of results which include a result associated with one of theplurality of kinds of the bonus game.